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Finding the Fourth Proportional to 6,938, 10,407 and 2,074

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Solution

The fourth proportional to 6,938, 10,407 and 2,074 is: 3,111

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,938 : 10,407 = 2,074 : x
  2. Step 2: Convert to fraction form
    6,938/10,407 = 2,074/x
  3. Step 3: Cross multiply
    6,938x = 10,407 × 2,074
  4. Step 4: Simplify right side
    6,938x = 21,584,118
  5. Step 5: Solve for x
    x = 21,584,118/6,938
  6. Step 6: Final answer
    x = 3,111

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.